// filter.h	V1.01	28.2.2000


#define PIXELS_THRESHOLD 0.004


// ----- Utility functions -----
int CompareValues(int *a, int *b);


// ----- Filtering functions -----
bitPicture *simpleFilter1(rgbPicture *picture, int color, int threshold,
                           int min_intensity);
bitPicture *autoFilter(rgbPicture *picture, int color, int min_intensity);
int medianFilter(rgbPicture *picture, int mask_size);